# AI tools for “LLM customization”

421 matching tools; showing 24, ranked by relevance.

Filters: `group=coding-development`

Related categories: [ai-models](https://openaitools.app/category/ai-models.md), [large-language-models-llms](https://openaitools.app/category/large-language-models-llms.md)

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Ollama](https://openaitools.app/tool/ollama) | 9,421,973 | +4.3% | Free, Freemium, Paid | Run and build with open AI models locally or in the cloud | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/ollama.md) |
| 2 | [Gemma Open Models by Google](https://openaitools.app/tool/gemma-open-models-by-google) | 4,900,914 | -13.5% | Freemium, Paid | Google's family of lightweight, open-weight AI models | category: ai-models, large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/gemma-open-models-by-google.md) |
| 3 | [DeepSeek](https://openaitools.app/tool/deepseek) | 372,761,591 | +4.3% | Freemium | High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs. | category: large-language-models-llms | [.md](https://openaitools.app/tool/deepseek.md) |
| 4 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/openai.md) |
| 5 | [Vellum](https://openaitools.app/tool/vellum) | 331,901 | -20.8% | Freemium, Paid | A private, memory-powered AI assistant you own and customize | keywords 100%; semantic match | [.md](https://openaitools.app/tool/vellum.md) |
| 6 | [AnythingLLM](https://openaitools.app/tool/anythingllm) | 512,269 | +12.9% | Freemium | Own your intelligence: a private AI assistant that runs entirely on your machine | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/anythingllm.md) |
| 7 | [Google AI Studio](https://openaitools.app/tool/google-ai-studio) | 112,620,020 | +2% | Freemium | Google's rapid prototyping IDE and developer API workbench for building multimodal applications with Gemini models. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 8 | [LiteLLM](https://openaitools.app/tool/litellm) | 576,967 | +7.9% | Freemium, Contact for Pricing | One open-source AI gateway for 100+ LLM providers | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/litellm.md) |
| 9 | [Open WebUI](https://openaitools.app/tool/open-webui) | 804,534 | -2.8% | Freemium | Self-hosted AI workspace for local and cloud models | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/open-webui.md) |
| 10 | [Qwen 4 (Alibaba Qwen4)](https://openaitools.app/tool/qwen-4) | 35,101,353 | -6.2% | Freemium | Alibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/qwen-4.md) |
| 11 | [LLM Gateway](https://openaitools.app/tool/llm-gateway) | 168,426 | -14.5% | Freemium, Contact for Pricing | One OpenAI-compatible API to route, monitor and control 250+ LLM models | category: ai-models, large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/llm-gateway.md) |
| 12 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | One API key for hundreds of AI models from every major provider | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 13 | [SiteGPT](https://openaitools.app/tool/sitegpt) | 164,579 | -15% | Free Trial, Paid, Contact for Pricing | Custom AI support chatbots trained on your own website content | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/sitegpt.md) |
| 14 | [ApX Machine Learning](https://openaitools.app/tool/apx-machine-learning) | 252,389 | -6.5% | Freemium | VRAM, throughput and GPU cost calculators plus courses for open-weight LLM deployment | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/apx-machine-learning.md) |
| 15 | [Emma AI](https://openaitools.app/tool/emma-ai) | 1,940 | -68.5% | Freemium | Build a custom GPT-powered assistant that answers from your own business data. | category: large-language-models-llms; keywords 100%; semantic match | [.md](https://openaitools.app/tool/emma-ai.md) |
| 16 | [BigModel](https://openaitools.app/tool/bigmodel) | 5,700,686 | -17% | Freemium | Zhipu AI's open platform for GLM large models, multimodal APIs, and agent building | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/bigmodel.md) |
| 17 | [Portkey](https://openaitools.app/tool/portkey-ai) | 195,650 | -9.4% | Freemium, Paid, Contact for Pricing | AI gateway, observability and guardrails for production LLM apps | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/portkey-ai.md) |
| 18 | [MiniMax Image-01](https://openaitools.app/tool/minimax-image-01) | 5,253,734 | -13.2% | Contact for Pricing | MiniMax's open-weight model for turning prompts into images | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/minimax-image-01.md) |
| 19 | [Lamini](https://openaitools.app/tool/lamini) | 4,158 | +0.3% | Freemium, Contact for Pricing | Build and control custom LLMs with enterprise-grade accuracy | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/lamini.md) |
| 20 | [Label Studio](https://openaitools.app/tool/label-studio) | 137,199 | -16.1% | Contact for Pricing, Free | Label any data. Evaluate any AI. | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/label-studio.md) |
| 21 | [Gemini 4 Carbon (Gemini Carbon 4)](https://openaitools.app/tool/gemini-4-carbon) | 4,339,429 | +12.7% | Freemium | Google DeepMind's #1 frontier AI model (Gemini Carbon 4) for long-horizon agentic coding, cybersecurity defense, and 1M-token multimodal reasoning. | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/gemini-4-carbon.md) |
| 22 | [Mammouth](https://openaitools.app/tool/mammouth) | 2,449,134 | +10.4% | Paid | Access many leading AI models through one subscription | category: ai-models, large-language-models-llms | [.md](https://openaitools.app/tool/mammouth.md) |
| 23 | [Manifest](https://openaitools.app/tool/manifest) | 54,135 | -23% | Free | The open-source LLM gateway that fixes your agents' requests on the fly | category: large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/manifest.md) |
| 24 | [gpt-oss playground](https://openaitools.app/tool/gpt-oss-playground) | 37,746 | -19.8% | Free | A live demo playground for OpenAI's open-weight gpt-oss models | category: ai-models, large-language-models-llms; semantic match | [.md](https://openaitools.app/tool/gpt-oss-playground.md) |

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Source: https://openaitools.app/?q=LLM%20customization

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)